Expert Advice (D20 Modern Feat)
From D&D Wiki
You are widely recognized as an authority in an activity or area of knowledge. Choose a single skill for this feat to affect; you may not choose Profession, Read/Write Language, or Speak Language.
Prerequisite: At least 1 rank in the skill selected.
Benefit: When making checks with the selected skill, you may use your Reputation bonus instead of the usual ability modifier.
Special: You may gain this feat multiple times, its effects do not stack. Each time you take it, you select a different skill.